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Diffstat (limited to 'doc/gawk.texi')
| -rw-r--r-- | doc/gawk.texi | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/doc/gawk.texi b/doc/gawk.texi index 2cf38283..1370daf9 100644 --- a/doc/gawk.texi +++ b/doc/gawk.texi @@ -9663,7 +9663,7 @@ point, so the default behavior was restored to use a period as the decimal point character. You can use the @option{--use-lc-numeric} option (@pxref{Options}) to force @command{gawk} to use the locale's decimal point character. (@command{gawk} also uses the locale's decimal -point character when in POSIX mode, either via @option{--posix}, or the +point character when in POSIX mode, either via @w{@option{--posix}}, or the @env{POSIXLY_CORRECT} environment variable, as shown previously.) @ref{table-locale-affects} describes the cases in which the locale's decimal @@ -10185,7 +10185,7 @@ For maximum portability, do not use the @samp{**=} operator. There is a syntactic ambiguity between the @code{/=} assignment operator and regexp constants whose first character is an @samp{=}. @value{DARKCORNER} -This is most notable in commercial @command{awk} versions. +This is most notable in some commercial @command{awk} versions. For example: @example @@ -12602,7 +12602,7 @@ any @code{ENDFILE} rules are executed except in the case as mentioned below, @code{ARGIND} is incremented, and -any @code{BEGINFILE} rules are executed +any @code{BEGINFILE} rules are executed. (@code{ARGIND} hasn't been introduced yet. @xref{Built-in Variables}.) With @command{gawk}, @code{nextfile} is useful inside a @code{BEGINFILE} @@ -13298,10 +13298,21 @@ to test for these elements @cindex @command{gawk}, @code{PROCINFO} array in @cindex @code{PROCINFO} array -The @code{PROCINFO} array is also used to cause coprocesses +The @code{PROCINFO} array has the following additional uses: + +@itemize @bullet +@item +It may be +used to cause coprocesses to communicate over pseudo-ttys instead of through two-way pipes; this is discussed further in @ref{Two-way I/O}. +@item +It may be used to provide a timeout when reading from any +open input file, pipe, or coprocess. +@xref{Read Timeout}, for more information. +@end itemize + This array is a @command{gawk} extension. In other @command{awk} implementations, or if @command{gawk} is in compatibility mode |